United States. Department of Agriculture. Office of the Secretary & Nickels, C. B. (1930). Comparative study of dusting by means of airplane and ground machine for control of blueberry maggot. U.S. GPO.
Chicago Style (17th ed.) CitationUnited States. Department of Agriculture. Office of the Secretary and C. B. Nickels. Comparative Study of Dusting by Means of Airplane and Ground Machine for Control of Blueberry Maggot. Washington: U.S. GPO, 1930.
MLA (9th ed.) CitationUnited States. Department of Agriculture. Office of the Secretary and C. B. Nickels. Comparative Study of Dusting by Means of Airplane and Ground Machine for Control of Blueberry Maggot. U.S. GPO, 1930.
Warning: These citations may not always be 100% accurate.